Other Assets Loan Receivable and Allowance (Details) (USD $)	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012 Ashley Square [Member]	Dec. 31, 2011 Ashley Square [Member]	Dec. 31, 2012 Cross Creek [Member]	Dec. 31, 2011 Cross Creek [Member]	Dec. 31, 2012 Iona Lakes [Member]	Dec. 31, 2011 Iona Lakes [Member]	Dec. 31, 2012 Arbors at Hickory Ridge [Member]	Jun. 30, 2012 Arbors at Hickory Ridge [Member]	Dec. 31, 2012 Woodland Park [Member]	Dec. 31, 2011 Woodland Park [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Property loan receivable, outstanding balance	$ 20,328,927	$ 19,808,803	$ 4,894,342	$ 4,786,342	$ 6,588,087	$ 6,769,227	$ 7,741,118	$ 7,339,118	$ 191,264	$ 600,000	$ 914,116	$ 914,116
Accrued interest	6,419,047	5,066,366	1,681,322	1,331,186	1,578,288	1,360,270	2,856,290	2,207,301	697		302,450	167,609
Loan loss reserves	(18,134,902)	(16,782,918)	(5,277,664)	(4,927,528)	(4,782,760)	(4,564,742)	(6,857,912)	(6,208,923)	0		(1,216,566)	(1,081,725)
Net taxable loans	$ 8,613,072	$ 8,092,251	$ 1,298,000	$ 1,190,000	$ 3,383,615	$ 3,564,755	$ 3,739,496	$ 3,337,496	$ 191,961		$ 0	$ 0